/* Copyright (c) 2009 Lintorus@EU-Destromath
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package authenticator.http;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class HttpConnection {

  private static final int MAX_ACCEPTED_BODY_SIZE = 1000;
  
  public static HttpResponse doHttpRequest(HttpRequest a_request) throws IOException {
    HttpURLConnection httpConnection = (HttpURLConnection)((new URL(a_request.getRequestURL())).openConnection());
    if (a_request.getRequestType() == HttpRequest.REQUEST_TYPE_GET) {
      httpConnection.setRequestMethod("GET");
    }
    else if (a_request.getRequestType() == HttpRequest.REQUEST_TYPE_POST) {
      httpConnection.setDoOutput(true);
      httpConnection.setRequestMethod("POST");
      httpConnection.setRequestProperty("Content-type", "application/octet-stream");
      OutputStream requestBodyStream = httpConnection.getOutputStream();
      requestBodyStream.write(a_request.getRequestBody());
      requestBodyStream.flush();
    }
    else {
      throw (new IOException("Unknown HTTP request type"));
    }
    int responseCode = httpConnection.getResponseCode();
    InputStream responseBody = httpConnection.getInputStream();
    int i = MAX_ACCEPTED_BODY_SIZE;
    ByteArrayOutputStream responseBodyByteArray = new ByteArrayOutputStream();
    while (i > 0) {
      int currentByte = responseBody.read();
      if (currentByte != -1) {
        responseBodyByteArray.write(currentByte);
        i--;
      }
      else {
        i = 0;
      }
    }
    responseBody.close();
    return (new HttpResponse(responseCode, responseBodyByteArray.toByteArray()));
  }
  
}
